The North Dakota Agricultural Weather Network has two apps available for your smart phone and tablets. One of the apps is for inversion notifications and the other is for Potato late and early blight. Both apps also have current weather information for the 131 stations in the network. The two apps were updated last week. By popular demand the app now gives you rainfall data for not only today, but yesterday as well so you can keep track of the rain from the past 24 or more hours. Plus, the inversion app also gives you the current delta T reading, which is the difference between the dry and web bulb that is useful when determining the best times to spray.